Hi, I am going for an MRI on Monday, my head has been feeling like a tight ball ready to explode, lots of pain was going up one side of my jaw to above the eyebrow line, that has ceased but I feel like I m heavily hung over every day. tired, the corners of my eyes are red by my nose, my forhead has a heavy throbbing feeling. My heart races once in a while for no reason. yes, I am a smoker, like my beer, but work full time and am not overweight, healthy, and active otherwise.